Meet Our Experts

Mark Freeth is a lifelong mover, teacher, and musician who’s spent nearly five decades exploring how the body learns. Founder of the Freestyle Movement Project, Mark blends elements from martial arts, gymnastics, dance, and yoga to create movement practices that build strength, agility, and curiosity all without the dogma.

Kevin Harbut represented Great Britain in freestyle skiing at the 1998 Winter Olympics. Drawing from his elite sports background, he writes on the mindset, resilience, and performance psychology that drive success in both sport and life.

Matt Grimshaw known as Coach Grimmy is the founder of SISU Fitness, a HYROX-affiliated gym coaching athletes from first-timers to world podium contenders. He blends functional fitness science with SISU grit to help you train, race, and perform at your best.

Chris is a performance-focused Personal Trainer with over 12 years of experience coaching everyone from beginners to elite athletes. A competitive Olympic Weightlifter, Chris helps clients move better, feel stronger, and perform at their highest potential.

Richard Branson is a Tunbridge Wells based personal trainer and HYROX athlete blending functional fitness, endurance, and technology. He helps people build real-world strength, performance, and resilience inside and outside the gym.

The Relentless Bravery Editorial Team brings together athletes, coaches, and experts to share trusted insights on training, recovery, and mindset. Always consult a professional before making fitness or health changes.